Quick Reference Table
Requirement | Details |
|---|---|
License Type | No HVAC license at state level; $25,000 mechanical contractor bond required. Minneapolis: HVAC Class A (install/fix/clean), HVAC Class B (clean only). |
Regulating Agency | Minnesota Department of Labor and Industry (DLI), Construction Codes and Licensing Division (CCLD); cities like Minneapolis for municipal licensing. |
Experience Required | No state experience or exam required. Minneapolis did not specify experience requirement. |
Exam Required | None at state level. Minneapolis page did not specify. |
Renewal & CE Hours | State: bond valid for 2 years, $100 renewal fee, no CE. Minneapolis: no CE noted. |
Fees | $100 state bond filing (good for 2 years), $100 renewal; Minneapolis bond amounts: $25,000 (Class A), $10,000 (Class B). State bond fee confirmed as of 2026 (bond fee source). |
Official URLs | State Mechanical Contractor Bond, |
Who Needs a License in Minnesota?
No state-level HVAC license is issued anywhere in Minnesota. Instead, every business or contractor that wants to contract HVAC work, including gas, ventilation, cooling, air conditioning, fuel-burning, or refrigeration, must file a $25,000 mechanical contractor bond with the Minnesota Department of Labor and Industry. This applies regardless of the project size, value, or whether the work is residential, commercial, or industrial (DLI bond requirements).
For work performed inside Minneapolis and some other municipalities, a local HVAC contractor license is additionally required before you can bid work. Minneapolis breaks this down into Class A and Class B licenses, linked to different scopes of work and bond amounts.
Employees performing HVAC work under a bonded contractor do not need individual licenses, as long as the contractor holds the active bond (and where required, the municipal license). Subcontractors also work under the prime contractor’s bond when they do not contract directly with the customer. There are no handyman or owner-builder exemptions at the state level due to the lack of a licensing program, if you contract for HVAC work, you must file the bond.
HVAC License Requirements in Minnesota: License Types
The state of Minnesota does not issue or recognize specific HVAC license requirements in Minnesota. Only a bond requirement exists at the state level. However, cities such as Minneapolis require special local HVAC contractor licenses in addition to the bond.
State Mechanical Contractor Bond
This statewide bond qualifies you to contract for any type of HVAC or mechanical work, including installation, repair, service, and new construction. No license is issued, only the bond filing allows you to operate legally.
Minneapolis HVAC Class A and B Licenses
Class A HVAC Contractor License authorizes the contractor to install, fix, and clean HVAC systems (Minneapolis HVAC Class AB).
Class B HVAC Contractor License allows cleaning of HVAC systems only.
Separate bond amounts apply for each municipal license class. Always check with the relevant municipality for the most up-to-date requirements before bidding or contracting work.
How to Get Licensed in Minnesota
There is no state HVAC license in Minnesota. To contract HVAC work or mechanical work statewide, you must file a mechanical contractor bond with the Minnesota DLI. In some cities, you must also obtain a municipal HVAC contractor license, such as in Minneapolis.
Obtain a $25,000 mechanical contractor bond from a surety company licensed in Minnesota (required state-wide).
Complete the necessary bond forms, including the mechanical surety bond form and all disclosures (forms and instructions available at DLI Mechanical Bond Forms).
File your bond packet with the Minnesota Department of Labor and Industry. You may file online through the iMS portal or mail the original signed bond and forms, with a check for the $100 filing fee.
For projects inside cities like Minneapolis, obtain the local HVAC contractor license (Class A or Class B) and meet local bond requirements.
Once your bond is accepted and, if required, your municipal license is granted, you may legally contract HVAC work within the allowed scope of work.
Submission Methods
You can process the bond online via the DLI iMS portal or mail in the application materials. The DLI does not specify exact processing times. However, you should allow sufficient lead time before bidding or starting work. Minneapolis municipal license applications are processed by the city separately and require proof of the state bond.
Required Forms
Mechanical Surety Bond Form (official DLI form)
Mechanical Contractor Bond Packet (download from DLI’s forms page)
Disclosure of business owners form
Workers’ compensation certificate of compliance (if applicable, but not required for DLI bond only)
Application Requirements
For the mechanical contractor bond, the main HVAC license requirement in Minnesota, you do not need to meet any age, experience, education, or citizenship standards at the state level. There are no personal requirements, only requirements for your business entity and bond.
Bond Amounts and Types
The standard DLI bond is $25,000 for mechanical contractors, including those performing HVAC work (bond details).
The bond must be issued by a surety licensed to operate in Minnesota.
Minneapolis Class A HVAC license also requires a $25,000 bond, while Class B requires a $10,000 bond (municipal amounts).
Insurance Requirements
No general liability or workers' compensation insurance is required for filing the mechanical contractor bond at the state level. The requirements for municipal HVAC licenses, like those in Minneapolis, did not mention mandatory insurance. Always verify at the city level.
Other Requirements
No background checks or fingerprinting are required for the DLI bond filing.
No federal certifications (such as EPA 608) are required by the state for the contractor bond, but they may be necessary under federal law for certain types of refrigerant work.
Exams
No exam is required to meet HVAC license requirements in Minnesota at the state level. Minnesota's process for mechanical contractor bonding does not include any trade or business exam (DLI bond requirements).
For Minneapolis municipal HVAC Class A and B licenses, the city's guide does not identify any trade exam or business exam requirement. You should still check with each local authority for any testing or registration steps before applying.
Fees
The only state fee for HVAC license requirements in Minnesota is for the mechanical contractor bond filing: $100 for a two-year bond filing, and $100 to renew the bond every two years (as of 2026, see official DLI fee schedule).
State mechanical contractor bond filing: $100 for 2 years (renewal also $100).
No application, renewal, or exam fees exist because there is no state license, only the bond fee applies.
In Minneapolis, bond amounts are $25,000 for Class A and $10,000 for Class B, but the city fee for filing these bonds is not listed online. Verify at the Minneapolis HVAC license page.
For details, see the DLI official fee schedule. If performing work in other municipalities, contact their licensing offices directly for current local fee amounts.
Renewal and Continuing Education
To comply with HVAC license requirements in Minnesota, you must renew your mechanical contractor bond with the DLI every two years. The renewal fee is $100 (as of 2026). No continuing education (CE) is required for the state mechanical bond (DLI bond requirements).
Renewal Deadlines and Process
Your bond remains valid for two years after filing. You must submit a renewal and pay the $100 fee before your bond expires to avoid lapses.
The DLI has not published late penalties or reinstatement procedures. If your bond lapses, you must refile and pay the new bond filing fee to become eligible to contract again. You cannot legally contract HVAC work during a lapse.
Minneapolis' policy on HVAC license renewal and any CE requirement is not detailed online; verify with Minneapolis directly (HVAC Class AB).
Reciprocity
No license reciprocity exists for HVAC license requirements in Minnesota at the state level. Since Minnesota does not issue a state HVAC contractor license, only a mechanical contractor bond, there are no reciprocal agreements or formal endorsement pathways with other states. If you hold an HVAC license in another state, you must still file a new mechanical contractor bond with the Minnesota DLI before contracting HVAC work in Minnesota (DLI bond requirements).
